Question

I have a memory leak question. Will the instances of obj ever be eligible for garbage collection until the class instance of TopClass goes out of scope?

public class TopClass
{
  public void MyFunction()
  {
    TestClass obj = new TestClass();
    obj.PropertyChanged += (s,e) => { //Do some code };
    obj = null;
  }
}

Furthermore that would make all objects that instantiate a TopClass and invoke MyFunction() to not be eligible for GC right?

I understand that in managed code once the application goes out of scope then all the objects are eligible, but I want to know WHILE my app is running this will cause a memory leak. Right?

Answer 1

Nope. obj will be collected all right. Nothing in this code causes a strong reference.

An object can be kept alive by being attached as an event handler, but an object cannot be kept alive by having event handlers.